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Louis Pasteur and the Attenuated Vaccine by Ian

Updated: Jun 17, 2023

About the Author

I have been teaching Ian for almost two years. Over this time, it has been a privilege to witness his work ethic and growth as a writer. His essays have become more focused, he has a stronger foundation of grammar and academic conventions, and he chooses his words more effectively. Seeing students like Ian develop as writers (and thinkers) is what I love most about tutoring. Ian has worked hard to improve his writing, and I'm excited to see what he'll do next. Please congratulate him in the comments below.

--Dustin Stevens, Owner-director of Good English Tutors

Louis Pasteur and The Attenuated Vaccine

by Ian

Louis Pasteur was born in 1822 in Dole, France (Development of the Attenuated Vaccine, 2016). As a child, Louis was much more gifted at the arts than academic studies and no one would have guessed that he would become a scientist. Even more surprisingly, he would later be known around the world as the “father” of the attenuated vaccine. This advancement led to many more discoveries and saved lives (Development of the Attenuated Vaccine, 2016).

Early Life

Early in Louis’s career he was studying a disease in silkworms that was destroying the silk business in France. People could not see the disease, so Louis proposed the Germ Theory, which states that many diseases are caused by microorganisms that cannot be spotted by the human eye. His Germ Theory greatly affected the medical world and would lead to many practical changes concerning how we live and how medical treatment is performed ("Attenuated Vaccine"). In the early 1870s, Louis was already a renowned chemist and scientist in France, and by 1873 he was chosen to be an associate member of France’s Academy of Medicine ("Attenuated Vaccine").

Cholera Research

Louis started to investigate chicken cholera in 1877, which is a disease that was decimating the breeding chicken population. Following Edward Jenner and his discovery of the smallpox disease, Louis reasoned that vaccines could be developed for all other diseases. He wanted to use this logic and find a vaccine for chicken cholera (Development of the Attenuated Vaccine, 2016). In 1878, Louis was able to culture the bacteria of chicken cholera and started to inoculate chickens; however, many chickens died due to unsafe inoculation methods. Louis continued studying, looking to find safer inoculation methods.

An Accidental Discovery

In 1879, Louis observed that old culture somehow lost its virulence. Louis asked his assistant to dose the chickens with fresh culture before he left for holiday. The assistant forgot and a month later performed the procedure using the aged cultures. The chickens only had mild signs of the disease and survived. Louis, intrigued by this strange outcome, dosed the chickens with fresh viral bacteria and they survived yet again. The weak bacteria, which lost its virulence after sitting in the lab for a month, prepared the chicken’s immune system to fight the disease, immunizing the chickens from Cholera. This is how the attenuated vaccine was discovered ("Attenuated Vaccine").

An Enduring Legacy

Louis went on to discover and create vaccines for many more diseases until he died in 1895. Now, because of him, we have the attenuated vaccine, and we have advanced our knowledge of vaccines tremendously since his time so that we now have many different types of vaccines with a multitude of uses, which have saved millions of lives. Currently, his methods and experiments are taught by schools around the world. Through hard work, determination, and a dash of luck Louis Pasteur revolutionized the medical world with the attenuated vaccine.



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1 comentario

Dustin Stevens
Dustin Stevens
05 ene 2022

Congratulations, Ian! 😁

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